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1. 发明授权

US08316689B2 Quantitative evaluation of scratch-induced damages on polymeric and coating materials 有权
标题翻译：对聚合物和涂层材料的划痕损伤的定量评估
公开(公告)号：US08316689B2
公开(公告)日：2012-11-27
申请号：US12845388
申请日：2010-07-28
申请人： Jong Il Weon , Si Yong Song , Jong Bae Lee , Kil Yeong Choi , Sung Goo Lee , Jae Heung Lee
发明人： Jong Il Weon , Si Yong Song , Jong Bae Lee , Kil Yeong Choi , Sung Goo Lee , Jae Heung Lee
IPC分类号： G01N3/56
CPC分类号： G01N3/46
摘要： Provided is a method for quantitative evaluation of mar- and scratch-induced surface damage on polymeric and coating materials. The method for quantitative evaluation of scratch-induced damage on polymeric and coating materials includes: preparing a test specimen of polymeric and coating materials; inducing a scratch damage on the surface of the test specimen; representing the scratch damage formed on the test specimen as corresponding color coordinates; and calculating a quantitated scratch damage index from a combination of a load applied to the surface of the test specimen and the color coordinates corresponding to the scratch damage.
摘要翻译：提供了一种用于定量评估聚合物和涂层材料上的划痕和划痕表面损伤的方法。用于定量评估聚合物和涂层材料上的划痕损伤的方法包括：制备聚合物和涂层材料的试样; 在试样的表面引起划痕损伤; 代表在试样上形成的划痕损伤作为相应的颜色坐标; 以及从施加到测试样本表面的负载和对应于划痕损伤的颜色坐标的组合计算定量的划痕损伤指数。

2. 发明授权

US06172127B2 Preparation of polyimide foam 失效
标题翻译：聚酰亚胺泡沫的制备
公开(公告)号：US06172127B2
公开(公告)日：2001-01-09
申请号：US09151735
申请日：1998-09-11
申请人： Kil Yeong Choi , Jae Heung Lee , Sung Goo Lee , Mi Hie Yi , Seung Su Kim
发明人： Kil Yeong Choi , Jae Heung Lee , Sung Goo Lee , Mi Hie Yi , Seung Su Kim
IPC分类号： C08J902
CPC分类号： C08J9/02 , C08G73/1021 , C08G73/1028 , C08J9/28 , C08J2379/08
摘要： The invention herein relates to a process of preparing a novel polyimide foam having superior heat-resistance, flame retardancy, homogeneous size and distribution of cells, and low density, wherein a polyimide precursor in a granular form is prepared by means of using heterocyclic amine as catalyst and then foaming. According to the present invention, the preparing process of a polyimide foam comprises reacting aromatic carboxylic acid or the anhydrides thereof with an excess of aliphatic univalent alcohol to yield an aromatic ester solution. To the aromatic ester solution, divalent amines or the mixture thereof were added in the equivalent amount of said carboxylic acid or the anhydrides thereof in addition to a catalyst and surfactant to yield a polyimide. Then, the precursor in a granular form mixture was imidized while foaming by means of pre-heating and then heating in a microwave oven, after which was cured at a high temperature. Consequently, the present invention has the effect of providing a preparing process for a polyimide foam with superior heat-resistance and heat-insulating property, which can be widely used as substrate in aerospace, submarine, special ship, and high-speed train.
摘要翻译：本发明涉及一种制备具有优异的耐热性，阻燃性，均匀尺寸和细胞分布以及低密度的新型聚酰亚胺泡沫的方法，其中通过使用杂环胺作为颗粒形式制备颗粒形式的聚酰亚胺前体催化剂，然后发泡。根据本发明，聚酰亚胺泡沫的制备方法包括使芳族羧酸或其酸酐与过量的脂肪族单价醇反应，得到芳族酯溶液。除了催化剂和表面活性剂之外，向芳族酯溶液中加入等量的所述羧酸或其酸酐的二价胺或其混合物以产生聚酰亚胺。然后，将颗粒状混合物中的前体通过预热加热发泡，然后在微波炉中加热，然后在高温下固化。因此，本发明具有提供制备方法具有优异的耐热性和隔热性的聚酰亚胺泡沫，可广泛用作航空航天，潜艇，专用船和高速列车的基板。

3. 发明授权

US5693744A Amorphus polyamides having second order nonlinear optical property, and method for preparing them 失效
标题翻译：具有二阶非线性光学性质的Amorphus聚酰胺及其制备方法
公开(公告)号：US5693744A
公开(公告)日：1997-12-02
申请号：US492988
申请日：1995-06-21
申请人： Kil Yeong Choi , Moon Young Jin , Young Wun Kim
发明人： Kil Yeong Choi , Moon Young Jin , Young Wun Kim
IPC分类号： G02F1/35 , C08G69/02 , C08G69/26 , C08G69/28 , C09K9/02 , G02F1/355 , G02F1/361 , C08G69/08 , C08G73/10
CPC分类号： C08G69/26 , G02F1/3617
摘要： An amorphous polyamide represented by the formula(2) ##STR1## in which each R is at least one alkylene radical having 1 to 10 carbon atoms, R' is an electron acceptor group represented by the formula(3), ##STR2## wherein Y is --C.tbd.N, --NO.sub.2, --SO.sub.2 --R(R.dbd.C.sub.n H.sub.2n+1, n=1 to 20 alkyl derivatives), ##STR3## R" is at least one aliphatic or aromatic divalent group having 2 to 20 carbon atoms, and n is an integer of more than 3, having second order nonlinear optical property, and a method for preparing the polymer by the polycondensation of dicarboxylic acid derivative, having second order nonlinear optical property in its side chain, with diamine are disclosed.
摘要翻译：由式（2）表示的无定形聚酰胺（2）其中每个R是至少一个具有1-10个碳原子的亚烷基，R'是由式（3）表示的电子受体基团，（3）其中Y是-C 3 N，-NO 2，-SO 2 -R（R = C n H 2n + 1，n = 1-20烷基衍生物），R“是至少一个脂族或芳族二价基团具有2〜20个碳原子，n为大于3的整数，具有二次非线性光学性质，以及通过其侧链具有二次非线性光学性质的二羧酸衍生物的缩聚制备聚合物的方法，与二胺。

4. 发明授权

US6054554A Soluble polyimide resin comprising polyalicyclic structure 失效
标题翻译：可溶性聚酰亚胺树脂，包括多环脂结构
公开(公告)号：US6054554A
公开(公告)日：2000-04-25
申请号：US306757
申请日：1999-05-07
申请人： Kil Yeong Choi , Mi Hie Yi , Wenxi Huang
发明人： Kil Yeong Choi , Mi Hie Yi , Wenxi Huang
IPC分类号： C08G73/10 , C08G69/26
CPC分类号： C08G73/10
摘要： The invention herein relates to a novel soluble polyimide resin comprising polyalicyclic structures and the process of preparation of the same, wherein aromatic tetracarboxylic dianhydride and novel aromatic diamine having an polyalicyclic group with various structures are used to yield a novel form of a polyimide resin, which has superior heat-resistance, solubility, and transparency.More specifically, the invention herein relates to a novel polyimide resin having excellent heat-resistance and solubility, which is prepared by means of reacting diamine monomers having a novel chemical structure with various types of aromatic carboxilic dianhydrides, in stead of aromatic diamine used for the preparation of the conventional polyimide resin. As a result, the polymers so obtained had the glass transition temperature of 260.degree. C..about.410.degree. C. and showed a increase in solubility in proportion to the increase in a number of the aromatic rings between two phenyl groups. Further, the polymers herein showed superior solubility at room temperature in various types of organic solvents, e.g., m-cresol, N-methylpyrrolidone or dimethylacetamide.
摘要翻译：本发明涉及一种包含多环脂结构的新型可溶性聚酰亚胺树脂及其制备方法，其中使用具有各种结构的芳族四羧酸二酐和具有多环脂基的新型芳族二胺以产生新型的聚酰亚胺树脂，其中具有优异的耐热性，溶解性和透明性。更具体地说，本发明涉及具有优异的耐热性和溶解性的新型聚酰亚胺树脂，其通过使具有新型化学结构的二胺单体与各种类型的芳族羧酸二酐反应而制备，代替芳族二胺用于常规聚酰亚胺树脂的制备。结果，如此获得的聚合物的玻璃化转变温度为260℃，差异410℃，并且与两个苯基之间的芳环数量的增加成比例地显示出溶解度增加。此外，本文的聚合物在各种类型的有机溶剂例如间甲酚，N-甲基吡咯烷酮或二甲基乙酰胺中在室温下表现出优异的溶解度。

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